A overweight person who eats to excess as if thin with a high metabolism, despite the obvious evidence to their rotund appearance
It was clear that Nancy was a flat girther as she ran out the all-you-can eat buffet and was excited for beach season.
by Shewasawhoowah September 27, 2025

by Dlctionarydotcom January 1, 2015

A collection of words you use when your friends ask you to give them something to rap about. Guaranteed to stump them under almost any circumstance.
Friend- Hey bro, Give me something to rap about
You- Flatt Paddywack
Friend- The fuck is a Flat Paddywack?
You- Nice rap bruh
You- Flatt Paddywack
Friend- The fuck is a Flat Paddywack?
You- Nice rap bruh
by Grandma_Muskrat September 14, 2016

Hey Molly did you get the notes for last weeks lecture? I didn't even bother, Ms. Smith's lectures are hella flat anyways.
by queeritating February 27, 2020

Commonly used to describe a girl with the tits of a 10 year old annorexic male. Can be referenced to as an acronym, meaning "Forever Lacking Any Titties".
Person 1: I gotta say, Emma's pretty hot, I think I'll go for it
Person 2: Are you joking?? She's as flat as the Great Plains!
Alternatively, with the acronym in place...
Person 1: I gotta say, Emma's pretty hot, I think I'll go for it
Person 2: Are you kidding me? She is, and will forever, be F.L.A.T
(The first instance is much more commonly used)
Person 2: Are you joking?? She's as flat as the Great Plains!
Alternatively, with the acronym in place...
Person 1: I gotta say, Emma's pretty hot, I think I'll go for it
Person 2: Are you kidding me? She is, and will forever, be F.L.A.T
(The first instance is much more commonly used)
by E.M.V.J.J December 19, 2017

by slayhennysx July 19, 2023
